“It doesn’t make a lot of difference if you keep them talking or not,” McSwain said. “What’s most important is if you keep the air moving in and out of their lungs.”

Sunday’s victims were in so much pain, many of them could hardly move.

McSwain explains why.

“The thought process is I’ll just stay still because if I move it might hurt me; and so they stay down or lay down,” McSwain said. “As you saw one person on their hands and knees, just maintain quietness or stillness if you would until somebody is able to help them.”

McSwain says medical experts have already begun training police and teachers how to stabilize shooting victims in the New Orleans area.